Added the ability to archive projects:

* Only administrators can archive/unarchive projects.
* Once archived, the project is visible on the admin project listing only. It doesn't show up anywhere else in the app. Subprojects are also archived.
* Archive/unarchive preserve everything on the project (issues, members, ...).
* A subproject can not be unarchived if its parent project is archived.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@549 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/admin_controller.rb

@@ -27,12 +27,18 @@ class AdminController < ApplicationController
 	
   def projects
     sort_init 'name', 'asc'
-    sort_update		
-    @project_count = Project.count		
+    sort_update
+    
+    @status = params[:status] ? params[:status].to_i : 0
+    conditions = nil
+    conditions = ["status=?", @status] unless @status == 0
+    
+    @project_count = Project.count(:conditions => conditions)
     @project_pages = Paginator.new self, @project_count,
-								15,
+								25,
 								params['page']								
     @projects = Project.find :all, :order => sort_clause,
+                        :conditions => conditions,
 						:limit  =>  @project_pages.items_per_page,
 						:offset =>  @project_pages.current.offset